Multiple head dry shaver



July 4 1939 J. H. RAN@ JR MULTIPLE HEAD DRY SHAVER Filed July 9, 1937 4Sheets-Sheet l INVENIOR 51m @6 H. Qa/ 1612 Jim,

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TTORN .July 4, 1939.` 1 H RAND, JR 2,164,425

' MULTIPLE HEAD vmur smwn l Filed July 9, 19:57 1 4 sheets-sheet 2A za ai '5' sz i 2.9 s: ,35 :ig 34. z

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ATTORN 5 July 4, 1939. J. H. RAND. JR-

MULTIPLE HEAD DRY SHAVER Filed July 9, 1937 4 Sheets-Sheet 3 .u s mh EwnQw IRG 1PA ,1 H. w f g .e 3m. J 5A W 3111) 4, 1939. J. H. RAND. JR2,154,425

' MULTIPLE HEAD DRY SHAVER Filed July 9, 193'? 4 Sheets-Sheet 441NVENTOR James H. )Pa/1d, Jn

ATTORNEY 5 iii Patented duty 4, i939 Mrap STATES PATENT oFFlcE MULTIPLEHEAD DRY SHAVER James Henry Rand, Jr., Stamford, Conn., assignor, bymesne assignments, to Remington Rand,

Inc., New York, N. Y., a corporation of Dela- Ware Application July 9,1937, Serial No. 152,724

12 Claims.

ing a plurality of spaced shaving heads operated from a common motivedevice.

More specifically it is an object of this invention to produce amultiple head shaving device comprising two-or more independent shavingheads or assemblies alloperated by a .common motive device.

A further object of this invention is to provide various forms ofmultiple head shaving 'devices in which the shaving devices are in acommon planeor in a plane inclined to the longitudinal axis of thehousing for the operating mechanism.

A still further object of the invention is to provide a shavingdevicehaving a plurality of separate shaving heads, one or Vmore of which maybe angularly adjusted with respect to another or each other to adapt thedevice for more efficient engagement with the face contour.

These and many other objects as will appear from the followingdisclosure are secured by means of this invention.

This invention resides substantially in the comb'nation, construction,arrangement and relative location of parts, all in accordance with thefollowing disclosure when taken in connection with the attached drawingsprovided for the' purpose of illustrating various forms thereof.

In the accompanying drawings:

Fig. l is a vertical side edge elevational view of a shaver inAaccordance with this invention having two independent shaving heads, oneof which is angularly adjustable with respect to `the other;

Fig. 2 is a top plan view thereof;

3 is an enlarged view of the head end of this device showing theangularly adjustable head in cross-section;

Fig. fi is a vertical transverse cross-sectional view through thehousing and the heads showing the motor mechanism in side elevation;

Fig. 5 is a cross-sectional View taken on the line 5 5 of Fig. 4;

Fig. 6 isy a side elevational view of a portion of a modied arrangementshowing parts of the casing broken away in which three independentshaving heads are employed two of which are angnlarly adjustable withrespect to each other and the third head;

(C1. en -43) Fig. 1 is a longitudinal, vertical, cross-sectional viewthrough the central head and a portion of the housing;

Fig. 8 is a top plan view with most parts broken away of the arrangementof Fig. 6;

Fig. 9 is a side elevational view somewhat in vdiagrammatic form of amodied arrangement in which two heads mounted ln different planesREisSufi-:D

JAN 14 1941 are employed, one of which is angularly adjustable withrespect to the other;

Fig. 10 is a view similarto Fig. 9, indicating the angular adjustment ofthe movable head; and

Figs. 11 and 12 are views similar to Figs. 9 and 10 of a deviceemploying three separate heads,

two of which are angularly adjustable.

The detailed advantages of the constructions disclosed herein will bebest appreciated after a discussion of the details of the structureembodied therein. For this reason reference to the advantages will bedeferred until later.

In the structure of Figs. 1 to 5 inclusive the housing which providesthe handle for holding the deviceand manipulating it and enclosing theoperating mechanism, is moulded or otherform and the other of curvedform in which the l coil 6 are connected to a pair of terminal prongs 8mounted on a suitable insulating plate` 9 mounted in the housing.Connection to these terminals may be made by means of any sultableconnector plug forming part of the current supplying cable commonlyemployed with such devices.

Secured to the opposite sides of the core 5, so

as to enclose the pole faces from the sides are.

a pair of insulating plates I3 and I4 which may be secured thereto bymeans of screws, as shown,

` in the end cf the housing.

the longitudinal axis of the core and has mounted thereon between theinsulating plates e. suitably shaped armature ll comprising a pluralityof steel laminations secured together. Peripheral ends of the armatureare shaped to move in a circular path in close relation to the polefaces I0. Secured to the shaft l2 and preferably angularly displaced 180degrees from each other, are a pair of eccentrics I5 and I6 which lierespectively within the bifurcated ends of the levers 22 and 23. Theselevers are pivotally mounted upon a pivot pin 24 mounted on the gearwheel of the housing as shown, and are held separated by means of acollar 2li thereon.

At ll is generally shown a suitable make and break mechanism comprisinga pair of contacts which alternately engage and vdisengage by reason ofa cam acting therebetween and mounted on the shaft l2. This cam is notshown. It is positioned with respect to the circular pole ends of thearmature so as to make and break the circuit to the coil 6 in the propertimed relation in accordance with well known practice to effectcontinuous rotation of the armature. The mechanism of this type, as iswell known, adapts the device Nto operation from either alternating ordirect current circuits. The contacts are connected in series with thewinding 6 by means of the leads i9 and are shunted by means of condenseri8 to reduce sparking, all in accordance with well known practice.

As is clear from Fig. 4 the portion I of the housing is provided with anopening 2| through which a knurled wheel may be engaged by the thumb toeffect rotation thereof. This wheel is secured to the shaft i2 and isemployed, as is well known, for purposes of starting the motor in theevent that it stops after previous use in a position so that the contactoperating cam holds the contact apart, thereby breakingthe circuit swhich includes the coil 6.

The fixed head is shown comprising an outer member which has arectangular base to fit in the rectangular groove in the housing, and a,y semi-circular top with a bore therethrough to form a thin wall whichis transversely slotted in accordance with common practice to form aplurality of cutter bars. As is clear from Fig. 2, two rows of cutterbars disposed on opposite sides of a longitudinal center v line areprovided. Mounted in the bore of the member 25 is the inner cutter 25'which is shown in the form of a cylinder, the inner bore of which iseccentric to form a thin wall at the top which is transversely slottedto form the inner cutter bars. The lower surface of the inner cutter isnotched to receive the upper end of the operating lever 23 which isshaped so as to nt therein. Secured to the ends of the member 25, as isclear from Figs. l and 2, are a pair of bars 27 and 28 which may beriveted thereto, and which extend outwardly from .one side so as tooverlie the ends of the curved groove At 23 is the outer member of thesecond head which is pivotally mounted at one end by means oi the screw3| on the lever 23 and at the other end by means of a thumb screw 32 onthe bar 2. The outer member 29 is shaped in cross section, as is clearlyshown in Fig. 3, so as to have a curved base which nests in the curvedgroove in the housing. Its upper end is more or less round exteriorlyand has a core therethrough to form a thin wall at the top which istransversely slotted, see Fig. 2, to form one or more rows of cutterbars. In the arrangement shown it is preferable, in order to secure.maximum efficiency and rapid shaving, to have two rows of cutter barson each head as will be apparent later. Mounted in the bore ofthe'member 28 is the inner cutter 30 quite similar to the cutter 2G, andnotched at the bottom to receive the upper end of the operating lever22. It is to be noted that when the thumb screw 32 is loosened, as willbe clearfrom the figures, the head 29-30 may be rotated about the pivotscrew 3| and the thumb screw 32 to any desired angle within the rangeshown in Fig. 3, and then locked in place by the thumb screw 32.

As clearly shown in Fig. 2, each of the heads is provided, in the outermembers 25 and 29 respectively, with two rows of slots extendingparallel to each other and disposed on opposite sides of a longitudinalaxis. The outer row of slots of the outer member 25 is made up of twoportions 25 and 25" while the outer row of slots of the outer member 29is likewise made up of twoportions 29' and 29". Each portion of theslots is of uniform width but the portions 25 -and 29" are narrower thanthe portions 25 and 29. which are the inner rows, comprise slots v25o;and 29a which are of uniform width throughout their length and, asillustrated, are the same width as the Wider portions of the other tworows of slots. Because of the relative position of the two heads, it isdesirable to have thev two inner rows 25a and 29a wider to permit theeasy entry cf hairs. It is obvious that the skin cannot easily get downbetween the two heads with the vresult that there is no danger of injurybecause of the use of the wider slots and advan The other two rows ofthese members, l

tage is thus taken of this fact to provide an arrangement whichfacilitates the entry and cutting off of long soft hairs.

As is clear from Figs. 4 and 5 each inner cutter, that is the cutters 26and 30, is pressed upwardly against the rear faces of the cutter barsand the outer members by means of spring pressed plungers. Thus theinner cutter 30 is engaged by the plungers 33 and 35 which haveshoulders formed thereon against which the ends of the springs 3a and 36respectively rest. The lower ends of these springs rest on a bar 31mounted in the housing through which the lower ends of the plungerspass. A similar set of spring pressed plungers lact on the inner cutter2E. One of these is shown in Fig. 4 comprising the plunger 38, spring 39and bar 40 corresponding to the bar 37.

Furthermore, as is clear from Fig. 4, it is noted that the xed head islocked in its groove in the housing by means of the set screw 4 engagingthe outer member 25. Since the other head is supported from the formerby means of the bars 2l' and 28 they may be removed as .a unit and arelocated in place by means of the set screw 4 asa unit.

An important advantage of the construction of this type will be realizedwhen consideration is had of the device n use. Let it be presumed thatthe two heads are being moved over the face so that the head 29 of Fig.l precedes the head 25 with respect to their direction of movement. Thefrictional engagement of the skin with the head 29 will tend to stretchthe skin in the direction of the movement of the head, thereby insuringthat the trailing head 25 is operating over a smooth flat surfaceresulting from the stretching of the skin. Thus the hairs which are notremoved by the leadinghead are more certainly to be removed by thetrailing amalis head. A further advantage of an arrangement of this typeis that by angularly tiltingthe head 29 with respect to the head 25 asindicated in Fig. 3 the separation of the active areas of the two headsmay be varied and the manner of engagement of the two heads with respectto the surface of the skin being operated on Will insure a moreaccur-ate and close engagement of the heads with the face or surface,especially at the points where the contour is rapidly changing, as forexample around the chin and jawbone.

With an arrangement of this type it is possible to insure that conditionessential to effective shaving in devices of this type, namely that theactive areas of the cutter bars snugly hug the immediate surfaces beingoperated upon. In the case of shaving heads which have flat vsurfaces ontheir outer contacting lareas as indicated in Figs. 3 and 4 for example,the tilting of one of the heads insures proper positioning of these flatareas against the skin. The angular adjustability feature while notlimited to heads having outer cutter bars with fiat outer faces, is veryeffective therewith.

A further important feature of this invention is represented by the factthat the eccentrics l5 and IB are displaced 180 degrees from each otherso that the operating levers and inner cutters, as well as the cams areoperating in balanced or opposed relation, thereby reducing to a minimumthe vibration of the mechanism when in operation.

In the arrangement of Fig. 6 the motor shaft is provided with three camswhich are preferably displaced 120 degrees in angular relation withrespect to eachother. These cams are respectively engaged by threelevers 42, 43, and 44, which are pivotally mounted on a stud shaftprojecting from the inner face of one of the walls of the casing andheld in proper spaced relation by the collars 46. These levers areformed so that they may extend upwardly into engagement with the innercutters 5|, 50 and 52 of the three heads of this device in the mannerillustrated in Fig. 4.

These cutters are respectively mounted within the outer members 48, 41and 49 and the inner.

cutters and outer members are formed as previously described to providecooperating cutter bars. The outer members 48 and 49 are supported from.the outer member 41 by means of a pair of bars 53 and 54 as will beapparent from the gures, which bars are secured to the outer member 41in any suitable manner. In this case narrower portions 48".

the housing is formed with a central rectangular channel across the endthereof to receive the center head, and a pair of curved channels toreceive the two outside heads. The casing is moulded so as to haveintegral abutments 4|fi at the ends of the rectangular channel to aid inpositioning the heads and to provide a seat for the set 'screw 4 bymeans of which the head unit is held in place. The two outer heads arepivotally mounted at their right hand ends, Figure 8, on screws, notshown, mounted in the bar 53 similar to the screw 3l of Fig. 5. At thevother ends the knurled thumbscrews 55 and 5S are provided to pivot-allymount them in the bar 54 and to lock them in ajusted position.

The triple head arrangement of Fig. 8 employs the slot featurepreviously described in connection with Fig. l. Thusthe outer member 48of one head is provided with an outer row of slots having the portions48' and the relatively The inner row of this head comprises slots 48 ofuniform width. The two rows of slots on the outer member of the head 48each comprise portions 41 and relaarrangement. In this case, however,both of the outer heads are angularly'adjustable with respect to thecentral head and if desired in opposite directions with respect to eachother to even more accurately position the active cutting areas of thethree heads to ins'ure a close rapid shave.

In the arrangement of the remaining figures the heads are arranged on aplane that is inclined to the longitudinal axis of the casing. In thestructure of Figs. 9 and 10 the upper end of the casing is shownat 51.It is provided with a rectangular and a curved groove across the' endthereof which are. arranged in vertical spaced relation, as is clearfrom Fig. 9. In the rectangular groove is the head 58 and in the curvedgroove is the head 59. lIn this case the head 59 is pivotally supportedfrom the head 58V from a pair of brackets only one of which is shown at60 secured to the head 58and of the'proper shape to permit of pivotalsupport of the head 59 on the pivot pins, only one of which is shown at6|. As before, one of these pivot pins may be in the form of a knurledscrew having an en.

larged head to permit of loosening and tightening for adjustingpurposes. The range of angular movement ofthe head 59 is indicated inFig. 10. In addition to the advantages described in connection with theprevious arrangements this structure `in adjusting the heads on aninclined plane makes it possible for Ythe operator to hold the device inhis hand at a natural angle with respect' to the plane of the face whenboth of the cutters are in contact therewith.

The feature of the arrangement of Figs. 9 and I0 is shown employed inconnection with a shaving device having three separate shavin'g headsmounted thereon in a plane inclined to the longitudinal axis of thehousing. In this case the upper end of the housing 62 is shown having acentral rectangular groove and a pair of curved grooves on the endthereof disposed on opposite sides of the central groove. In the centralgroove is mounted the head 63 and secured to the ends v thereof arebars, only one of which is shown at E4. These bars are of coursesimilarly shaped and serve to pivotallysupport atl the ends thereof theangularly adjustable outside heads 65 and 65. The head 65 is pivotallymounted on the bars by means of pivot pins, one of which is shown at 61,and similarly there is shown at 68 one of the pivot pins for the head66. Fig. 12 illustrates the range of angular adjustment of the twooutside heads. In this arrangement, of course, the thumb screws can beprovided to permit of loosening and tightening the heads to aid inadjusting them.

In the arrangements of Figs. 9 to 12, as in the case of the previousarrangements, the head unit may be locked in place by any suitablemeans, such as a set screw. i

In the device of Figs. 11 and 12 by reason of the vertically displacedrelationship between the various heads and the angular adjustability ofthe outer heads, it is possible to secure a maximum of coincidence withthe contour of the face, and to obtain a very rapid close shave. Itwill, of course, be apparent that in any of these arrangements, andparticularly those in Figs. 9 to 12 inclusive, that when desired theuppermost head alone may be used for shaving. In all of thesearrangements the leading head with respect to the direction of movementof the device over the face will serve to stretch the skin to.facilitate operation thereon of the remaining heads.

From the above description it will be apparent to those skilled in theart that the invention herein disclosed may be embodied in a number ofdifferent physical forms without departure from the true scope thereof.'I wish it to be distinctly understood, therefore, that I am not to belimited to the specic forms of the device illustratcd in the drawingsand referred to in the description but rather by the scope of theappended claims.

What is claimed is:

l. In a shaving device as described the combination comprising a handleforming a housing, an operating motor in the housing, a pair of shavingh'eads mounted'on the housing at the same end, each comprising an outerslotted member and an inner slotted cutter bar, and a pair of leverspivotally mounted on the same axis for connecting said inner cutter barsto said`motor to eiect simultaneous movement thereof in opv positedirections.

2. A shaving device of the type described comprising a housing forming ahandle, a motor mounted in said housing, a plurality of cutter headsmounted on said housing, at least one of which is angularly adjustablewith respect to the others, and means for operatively connecting saidheads to said motor.

3. A shaving device of the type described comprising a housing forming ahandle, a motor mounted in said housing, three cutter heads mounted onsaid housing, two of which are angularly adjustable With respect to theother, and means for operatively connecting the cutter heads with themotor.

4. A shaving device of the type described com- -Y 6. A shaving device ofthe type described comprising a housing forming a handle, a motormounted in said housing, a plurality of cutter heads mounted on the endof said housing in vertically displaced relation, at least one of whichis angularly adjustable with respect to the others, and means foroperatively connecting the cutter heads to said motor.

7. A shaving device of the type described comprising a housing forming.a handle, a motor mounted in said housing, three cutter heads mountedon the end of said housing in vertically displaced relation, two ofwhich are angularly adjustable 'with respect to the third, and means foroperatively connecting the cutter heads to the motor.

8. A shaving device of the type described comprising a housing forming ahandle, a motor mounted in said housing, three cutter heads mounted onthe end of said housing in vertically displaced relation, two of whichare angularly adjustable with respect to the third and each other, andmeans f or operatively connecting the cutter heads to the motor.

9. A shaving device of the type described comprising a. housing forminga handle, a motor mounted in said housing, a pair of cutter headsmounted on said housing in vertically displaced relation, one of saidheads being angularly adjustable with respect to the other, and meansfor operatively connecting said heads to said motor. 10. In a dryshaving implement of the type described the combination including ahousing, an operating motor mounted in said housing, a shaver headincluding outer and inner slotted members mounted on said housing, asecond shaver head comprising outer and inner slotted members pivotallysupported from said rst shaver head, means for pivoting said second headwith respect to said first head, and means for operatively connectingthe inner members of both heads to said motor.

11. A shaving implement as described comprising a housing, a -motormounted ln said house ing, a shaver head mounted on said housing, twoadditional shaver heads pivotally supported from said nrst shaver head,means for causing pivotal movement of said additional shaver heads, andmeans for operatively connecting the shaver heads to said motor.

12. A shaving implement as described comprising a housing, a motormounted in said housing, a shaver head mounted on said housing, twoadditional shaver heads pivotally supported from said rst shaver head invertically displaced relation, means for causing pivotaly movement oflsaid additional shaver heads, and means for operatively connecting theshaver heads to said motor.

JAMES HENRY RAND, JR.

